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Electronic Transport Investigation Of Chemically Derived Reduced Graphene Oxide Sheets, Daeha Joung
Electronic Transport Investigation Of Chemically Derived Reduced Graphene Oxide Sheets, Daeha Joung
Electronic Theses and Dissertations
Reduced graphene oxide (RGO) sheet, a chemically functionalized atomically thin carbon sheet, provides a convenient pathway for producing large quantities of graphene via solution processing. The easy processibility of RGO sheet and its composites offer interesting electronic, chemical and mechanical properties that are currently being explored for advanced electronics and energy based materials. However, a clear understanding of electron transport properties of RGO sheet is lacking which is of great significance for determining its potential application. In this dissertation, I demonstrate fabrication of high-yield solution based graphene field effects transistor (FET) using AC dielectrophoresis (DEP) and investigate the detailed electronic …
Spin Pumping In Lateral Double Quantum Dot Systems, Sabine S. Pelton
Spin Pumping In Lateral Double Quantum Dot Systems, Sabine S. Pelton
Electronic Theses and Dissertations
Electron transport in single lateral quantum dot (QD) and parallel lateral double quantum dot (DQD) systems is modeled using semiclassical rate equations. The Zeeman effect, in conjunction with resonant tunneling, is used to select the spin of electrons involved in transport. We show adiabatic spin pumping by periodic variation of the systems' confining parameters, namely the quantum point contacts (QPCs) dictating the boundaries of the dots, and the gate voltage applied to each dot. The limitations of adiabatic spin pumping are subsequently examined by counting the average spin pumped per cycle when frequency and interdot capacitance are adjusted.